android 1-4

the extension for a java bytcode file is...

.class

the extension for a java source file is __

.java

Which of the following is true

Android is a Linux-based operating system designed primarily for touchscreen mobile devices. Android code is open source. Android is designed for smartphones and tablets. All of the above. (yes

Native libraries in the Android stack are written in ___

C/C++

in java to activate the completion feature press

Ctrl+Space

When the IDE builds a project, it compiles the _____ into _____ and then into __

Java source code (.java files), Java bytecodes (.class files), Dalvik executable files (.dex files)

which directory would you expand with package explorer to display java code in an editor

SRC

Given an EditText widget named usernameEditText, which of the following statements gets the string that's stored in that widget?

String username = usernameEditText.getText().toString();

in order to more easily internationalize your app, it is considered best practice to store the display text for your app in a seperate ___ file

XML

the eclipse work bench provides CODE EDITORS for working with

XML and SQL files

One of the advantages of using Eclipse when developing a new app is that Eclipse generates some of the beginning code for you. Types of code that Eclipse typically generates is:

XML for the user interface for the activity Java code that displays the user interface

a layout is

a container that determines where the child elements are displayed on the screen

an editorAction event typically occurs when the user presses an ____ on a soft-keyboard

action key

in the XML editor you can

add widgets code comments set widget properties

the android debug bridge (ADB)

allows your IDE to connect with an emulator or physical device

which of these is NOT part of the linux stack?

android SDK

When an IDE builds a project, it puts the .dex files and the rest of the files for the project in an __

android package

Given the following code in the strings.xml file, which of the following properties sets the text on the widget to "Continue"?

android:text="@string/continue"

the click event is available from most widgets but it is usually used for

buttons

in eclipse you can use the ___ feature to make it easier to enter the names of classes, objects, methods, fields, and values

code completion feature

what do android package (.apk) files contain?

compiled resources uncompiled resources .dex files

widgets can also be referred to as ___

controls

The screen that appears to the right of of an app in an Android virtual device that emulates the arrow keys that are available from some Android devices is known as a/an

d-pad

Dalvik executable files (.dex files) can be run by the ____

dalvik virtual machine

in android a __ controls how its child elements are displayed

default

although android supports other units of measurement, its a best practice to use

density-independant pixels

an example of an IDE is?

eclipse

an android virtual device (AVD) is an

emulator

in eclipse code that wont compile properly is known as an

error

an___is a special type of method thats executed when an event occurs

event handler

a layout can also be referred to as a

form

for most widgets, you can use which method(s) to get and set the text thats displayed in the widget

getText and setText

in eclipse, to view and work with your user interface, you open the

graphical layout editor

when an activity is in the paused state, the activity

has lost the focus and may be partially hidden by other activities

an __ is a user control such as soft-keyboard that enables users to input data, often text

input method editor (IME)

it is best to use density-independant pixels (dp) for padding because...

it allows apps to scale properly on different devices

the SRC directory contains the

java source code

A ___ is a container that determines where child elements are displayed on a screen.

layout

Android is a ___-based operating system.

linux

an object that listens for an event is known as a

listener

Developing apps that are appropriate for different locales is known as ___

localization

the ___ is an XML file that specifies the first activity to launch when the app is started

manifest

any major release of android is...

named after something sweet correspond with an Application Programming Interface (API) number

android does not always save the data of an activity

navigate away from the activity to another activity or app change orientation

when an activity is started, android runs wich method?

onCreate

when an app starts for the first time android calls the...

onCreate,onStart, and onResume

to restore values you have saved in your app you can use, you can override the __ method

onResume

the __ is an organization devoted to advancing open standards for mobile devices

open handset alliance

to set a property for a widget you select the widget in which view?

outline

in eclipse, open projects are displayed in ___ view

package

the eclipse workbench provides multiple views such as

package explorer outline console

To use the documentation for the Android API, you can select a/an ____ in the top left frame, and a/an ___ in the lower left frame.

package,class

within the SRC directory, the files can be organized into one or more ____ where each one corresponds with a subdirectory

packets

a common property for layout is...

padding height width

in eclipse you can add widgets to a layout by dragging them from the ___ on to the layout in the graphical layout editor

palette

android can be used to develop which type of apps?

photography finance reference all of the above (yes)

A _____ contains all of the files for an app including the files for the Java source code.

project

in eclipse a ___consists of a top-level directory that contain the subdirectories and files for an app

project

in Eclipse errors in code can be fixed fast using the ___ feature

quick fix feature

In Eclipse, by default, a new Android application includes a layout file that uses a/an ___ layout and a single TextView widget.

relative

the __ specifies what eclipse should do when you open an android app, including which emulator of physical device to use

run configuration

eclipse...

runs on all modern OS's is free is open-source

for the text-size property its generally considered best practice to use

scale-independant pixels

to permanently save values in your app, you can use the ___ class

shared preferance

For security reasons, all Android apps must be digitally ___ with a certificate.

signed

an on-screen keyboard is known as a

soft keyboard

SDK stands for _____.

software development kit

The Android system architecture is also known as the Android _

stack

the display text for an app is typically stored in the __ file

strings.xml

to switch the workspace to a specified directory, you would select the

switch workspace from the file menu

a textView can be referred to as a

text view

The EditText element displays the widget that allows the user to enter text. This widget can be referred to as a ___

textbox

three common type of widgets are...

textview d-pad edit-text

a ___ is a group of styles that define the look of a layout

theme

You can use Android to develop apps for ___ mobile devices such as smart-phones and tablet computers.

touchscreen

in an eclipse workbench, the different parts are known as

views

the different part of the eclipse workbench are known as

views

typically, an event occurs when a user interacts with a

widget

In Android, controls are typically referred to as ____

widgets

in adroid development the controls that make up the user interface are known as

widgets

there are three steps to handle an event 1.import the interface that defines a listener 2. implement the listener 3...

wire the listener to a widget

the ___ is the directory thats used by eclipse to store the subdirectories and files it needs to work

workspace

if the hardware keyboard option is NOT enables for a emulator...

you can use soft keyboard to enter text